In Wales, at Ffynnon Beuno Cave, Tremeirchion, Denbighshire, the cave complex is excavated: occupational evidence includes Aurignacian and proto-Solutrean flint work plus Pleistocene fauna (Palaeolithic, Old Stone Age).
As a child, Vaughan was highly influenced by his maternal grandmother, who was born in Tremeirchion in North Wales.
The town was part of the traditional lands of the Salusbury family and the Cotton baronets.
He also designed Church of St. Walburge in Preston, St Joseph's Church in Leigh, St Beuno's Ignatian Spirituality Centre in Tremeirchion and the Church of the Holy Name of Jesus in Manchester for the Jesuits.